Home / 72,163.38-99,588.55-40,332.29

Finding the Fourth Proportional to 72,163.38, 99,588.55 and 40,332.29

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Solution

The fourth proportional to 72,163.38, 99,588.55 and 40,332.29 is: 55,660.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,163.38 : 99,588.55 = 40,332.29 : x
  2. Step 2: Convert to fraction form
    72,163.38/99,588.55 = 40,332.29/x
  3. Step 3: Cross multiply
    72,163.38x = 99,588.55 × 40,332.29
  4. Step 4: Simplify right side
    72,163.38x = 4,016,633,680.51
  5. Step 5: Solve for x
    x = 4,016,633,680.51/72,163.38
  6. Step 6: Final answer
    x = 55,660.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.